How do lady bird beetles and dragon flies acts as biocontrol agents? Share with your friends Share 1 Sujanya Ramkumar answered this Ladybirds consume aphids. Dragonflies consume mosquitoes. Both aphids and mosquitoes are pests. Hence these plants serve as biocontrol agents by protecting the plants from pests. 3 View Full Answer Zaid Ansari answered this How do Ladybird beetles and dragonflies act as biocontrol agents 0